Perhaps you should try some spelling variations:
phat loc » hau loc, nhat loi, phap lo
thanh le » thinh le, thanh ve, thanh de
loc van » luoc van, hoc van, lo van
hanh le » hanh ve, hanh de, manh le
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » hieu qua
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ma hoi. ((hieu va) or (lieu va)) phat loc van ((hanh le) OR (thanh le)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. ((hieu va) OR (lieu va)) phat loc van ((hanh le) OR (thanh le)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. ((hieu va) or (lieu va)) phat loc van ((hanh le) OR (thanh le)) cuu tre*".