Perhaps you should try some spelling variations:
thi nang » ki nang, thi hanh
hang tai » hang va, dung tai
van hang » van khang, van hoang, van thang
thi cong » tai cong, thien cong
so sach » so sanh, bo sach, co sach
luc van » luoc van, luu van, duc van
bac luc » bao luc
cuc tre » duc tre, cua tre, cuu tre
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky ((nang xa) or (nang ma)) hoi. ((thi nang) OR (thi cong)) bac luc van hang tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((nang xa) OR (nang ma)) hoi. ((thi nang) OR (thi cong)) bac luc van hang tai cuc tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((nang xa) or (nang ma)) hoi. ((thi nang) OR (thi cong)) bac luc van hang tai cuc tre*".