Perhaps you should try some spelling variations:
vu khach » vu khac, vay khach, cua khach
vu khanh » vu thanh, van khanh, duy khanh
hanh lam » thanh lap, hanh kem, hanh va
nam thuc » nam thuoc, am thuc, nam thu
lam cuu » lam chu, lam cua, cham cuu
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
lai hoa » dai hoa, loai hoc
cuu tre » cua tre, cau tren, cau treo
v nang » va nang, vu nang, van nang
va nam » van nam, ha nam, va nay
y nang » ky nang, ly nang, may nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu khach) OR (vu khanh)) ((y nang) or (v nang)) lai hoa. hieu va nam thuc va hanh lam cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (vu khanh)) ((y nang) OR (v nang)) lai hoa. hieu va nam thuc va hanh lam cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) OR (vu khanh)) ((y nang) or (v nang)) lai hoa. hieu va nam thuc va hanh lam cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((vu khach) OR (vu khanh)) ((y nang) or (v nang)) lai hoa. hieu va nam thuc va hanh lam cuu tre*.