Perhaps you should try some spelling variations:
trinh tai » trinh toan, trinh tu, trinh han
hinh tai » chinh tai, hinh thai, hinh bai
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cuc tre » duc tre, cua tre, cuu tre
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa
dac va » day va, dat va, dai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang ma hoi. hieu va cac ((dac va) or (duc va)) ((hinh tai) or (trinh tai)) cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ma hoi. hieu va cac ((dac va) OR (duc va)) ((hinh tai) OR (trinh tai)) cuc tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ma hoi. hieu va cac ((dac va) or (duc va)) ((hinh tai) or (trinh tai)) cuc tre*.