Perhaps you should try some spelling variations:
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
tham doc » than doc, tham do, thuat doc
dinh cuu » dinh chi
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cuu » vi luu, vinh cuu
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky tang ma hoi. hieu va ((tham doc) OR (tham nuoc)) va hanh ((vi cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang ma hoi. hieu va ((tham doc) OR (tham nuoc)) va hanh ((vi cuu) OR (dinh cuu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky tang ma hoi. hieu va ((tham doc) OR (tham nuoc)) va hanh ((vi cuu) or (dinh cuu)) tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky tang ma hoi. hieu va ((tham doc) OR (tham nuoc)) va hanh ((vi cuu) or (dinh cuu)) tre*.